KR101875604B1

KR101875604B1 - 4-way forging press

Info

Publication number: KR101875604B1
Application number: KR1020170021578A
Authority: KR
Inventors: 이철수; 김낙수; 김종민; 유선혁
Original assignee: 서강대학교산학협력단
Priority date: 2017-02-17
Filing date: 2017-02-17
Publication date: 2018-07-06

Abstract

The present invention relates to a forging press, comprising: an upper fixture having two upper slopes which are moved up and down by a driver and which become higher toward the center and lower toward the edge; A first lower slope facing the upper slope, a lower slope facing the upper slope and a lower slope rising toward the edge, and a second lower slope slope increasing in height toward the center and lowered toward the edge, A lower fixing table having a first lower inclined surface and a second lower inclined surface formed on an upper surface thereof such that two second lower inclined surfaces are located on the inner side so that the shapes are symmetrical and a first lower inclined surface is located on the outer side of the second lower inclined surfaces; An upper forging die for forging the forging object is attached, a side surface of the lower side of the upper side is provided so as to be in contact with the upper inclined surface, a lower surface of the lower side of the gap member is in contact with the first lower inclined surface, Two upper assemblies guided by the upper inclined surface and the first lower inclined surface and moving inward as the gap between the upper inclined surface and the first lower inclined surface becomes narrower while moving together downward; And a lower forging die for forging the forging object are combined, one side of which abuts against the inside of the spacing member, the upper assembly moves inward toward the center while the other side abuts against the second lower inclined surface And two lower assemblies moving toward the center and moving upward along the second lower inclined plane.

Description

Four-Way Forging Press {4-WAY FORGING PRESS}

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a four-direction forging press, and more particularly to a forging press apparatus that strikes a forging object located on a central axis in four directions.

Generally, forging is a metal working method in which an outer portion is formed by a mechanical method of impacting the surface of a solid metal material while changing the microstructure.

Conventionally, although a forging process has been performed by hitting an object with a hammer or the like by a person, a pressing device for pressing the surface of a material material to perform molding is developed, and forging is performed by mechanical equipment provided with a forging die. A press was developed.

Since a general press machine performs molding for a plate material by applying pressure in a uniaxial direction, most of the forging presses perform such uniaxial forging process. However, it is often the case that a forging process is performed on several surfaces, such as when the surface of a rod-like object is processed. In this case, a structure using a plurality of forging dies each driven by a separate actuator is applied However, since a separate driver is provided for each of the plurality of forging dies, the manufacturing cost of equipment is increased, and the time required for the plurality of drivers to operate The forging process is not smoothly performed.

In order to solve this problem, a technology for a forging press which simultaneously moves four forging dies by using one actuator has been developed (US Patent Publication No. 2013-0247642), but a structure for moving a plurality of forging dies is complicated And the height of the central axis changes in accordance with the moving distance of the forging die. Therefore, there is a disadvantage that the height to be installed should be adjusted according to the size of the forging object.

Korean Patent Publication No. 10-1995-0016943 Korean Patent No. 10-1192999 U.S. Published Patent Application No. 2013-0247642

SUMMARY OF THE INVENTION It is an object of the present invention to provide a forging press for simultaneously moving four forging dies by using a single actuator in a simple structure.

To achieve the above object, according to the present invention, there is provided a four-direction forging press comprising: an upper fixing table having two upper slopes which are moved up and down by a driver and which become higher toward the center and lower toward the edge; A first lower slope facing the upper slope, a lower slope facing the upper slope and a lower slope rising toward the edge, and a second lower slope slope increasing in height toward the center and lowered toward the edge, A lower fixing table having a first lower inclined surface and a second lower inclined surface formed on an upper surface thereof such that two second lower inclined surfaces are located on the inner side so that the shapes are symmetrical and a first lower inclined surface is located on the outer side of the second lower inclined surfaces; An upper forging die for forging the forging object is attached, a side surface of the lower side of the upper side is provided so as to be in contact with the upper inclined surface, a lower surface of the lower side of the gap member is in contact with the first lower inclined surface, Two upper assemblies guided by the upper inclined surface and the first lower inclined surface and moving inward as the gap between the upper inclined surface and the first lower inclined surface becomes narrower while moving together downward; And a lower forging die for forging the forging object are combined, one side of which abuts against the inside of the spacing member, the upper assembly moves inward toward the center while the other side abuts against the second lower inclined surface And two lower assemblies moving toward the center and moving upward along the second lower inclined plane.

In the four-direction forging press of the present invention, two upper forging dies and two lower forging dies are arranged at equal distances with respect to a center axis on which the forging object is fixed. When the upper fixing table is moved downward, , The four forging dies move simultaneously in the X-shaped trajectory toward the forging object to strike the forging object.

When the upper inclined surface is a guide rail structure and the upper assembly is installed on the upper inclined surface of the guide rail structure, it is possible to prevent the upper assembly from being separated while guiding the movement of the upper assembly. In addition, the first lower inclined surface may be formed in a guide rail structure, the lower end of the spacing member may be provided in the guide rail structure, and the second lower inclined surface may be formed in the guide rail structure, and the lower assembly may be installed in the guide rail structure.

It is preferable to apply a structure or material that reduces friction to the surface where the upper inclined surface and the upper assembly are in contact with each other, and a lubricant may be used. Likewise, it is preferable to apply a structure or a material which reduces friction to a surface where the first lower inclined surface and the gap member contact with each other and a surface where the second lower inclined surface and the lower assembly abut each other, and a lubricant may be used.

Further, it is preferable that the upper inclined surface, the first lower inclined surface, and the second lower inclined surface are formed at an angle of 45 degrees with respect to the ground.

The apparatus may further include a vibrating device for vibrating the forging die to apply a blow to the surface of the forging object, and the vibrating device may include an eccentric cam installed in the assembly to which the forging die is coupled and a motor connected to the eccentric cam . At this time, it is preferable that the vibrating device is installed in two upper assemblies and two lower assemblies, respectively.

The present invention constructed as described above can reduce the manufacturing cost of the apparatus by moving four forging dies by using one driver, and simultaneously perform four-direction forging without needing to align the timings of a plurality of drivers It is effective.

Further, since the central axis is fixed at a fixed position regardless of the moving distance of the forging die, the forging process can be performed without modifying the position of the forging object or the fixing device.

Furthermore, by providing a vibrating device for vibrating the forging die in the direction of the forging object, it is possible to perform a forging process in which the surface of the forging object is quickly hit several times, so that the forging performance can be improved.

1 is a view showing a state before a forging press is operated according to an embodiment of the present invention.
2 is a view showing a state of an intermediate stage in which a forging press according to an embodiment of the present invention is operated.
3 is a view showing a state where the forging die of the forging press according to the embodiment of the present invention is moved to the innermost side.
4 is a view for explaining a structure of a forging press according to another embodiment of the present invention.
Figure 5 is an enlarged view of the upper assembly in the forging press of Figure 4;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the accompanying drawings, embodiments of the present invention will be described in detail.

1 to 3 are views showing the structure and operation of a forging press according to an embodiment of the present invention.

FIG. 1 is a state before the forging press according to the embodiment of the present invention is started, FIG. 2 is an intermediate state in which the forging press is operated, FIG. 3 is a state where the forging die of the forging press is moved to the innermost position to be.

The forging press of this embodiment includes an upper fixing table 100 and a lower fixing table 200. The lower fixing table 200 is fixed without moving and only the upper fixing table 100 is moved up and down by a driving device It moves. Between the upper fixing table 100 and the lower fixing table 200, a space for placing the forging object and the forging die assemblies is formed.

Four assemblies 300 and 400 provided with four forging dies 320 and 420 arranged in an X-shape at equal intervals with respect to a center axis (+) on which a forging object is installed are mounted on the upper fixture 100 And is provided on the lower fixing table 200 so that the forging dies 320 and 420 move toward the middle axis + when the upper fixing table 100 moves downward.

The upper assembly 300 is installed at the lower portion of the upper fixing table 100 and is guided along the upper inclined surface 110 formed at the lower portion of the upper fixing table 100. The upper inclined surface 110 is formed so as to be higher toward the center of the upper fixture 100 and lower toward the edge of the upper fixture 100. Two upper and lower inclined surfaces 110 are spaced apart from each other at the lower portion of the upper fixture 100, have. In this embodiment, the upper inclined surface 110 is inclined at an angle of 45 degrees with respect to the ground, and has a guide rail structure. The upper assembly 300 is installed on the upper inclined surface 110 of the guide rail structure and the friction between the upper inclined surface 110 and the upper assembly 300 is reduced by guiding the movement of the upper assembly 300 It is recommended that structure, material or lubricant be used.

The upper assembly 300 comprises an upper assembly body 310, an upper forging die 320 and a spacing member 330.

The upper assembly body 310 moves along the upper inclined surface 110 in contact with the upper inclined surface 110 and the upper forged die 320 in parallel with the upper inclined surface 110 on the opposite side. When the upper fixture 100 is moved downward by the driver, the upper assembly body 310 moves along the upper inclined plane 110 toward the central axis (+). As a result, the downward movement of the upper fixture 100 and the movement towards the central axis guided by the upper ramp 110 result in the upper forging die 320 moving diagonally toward the center axis (+) .

On the other hand, a spacing member 330 protruding downward is formed on one side of the upper assembly body 310, exactly outside the center axis (+). The spacing member 330 is in contact with the first lower inclined surface 210 formed on the upper edge of the lower fixing table 200. The lower inclined surface 210 is lowered toward the center of the lower fixing table 200, Two on the upper edge of the upper fixture 100 are formed. The first lower inclined surface 210 and the upper inclined surface 110 are provided at positions corresponding to each other so that the space between the upper and lower holding members 100 and 200 is narrow at the edge and widens toward the center. As a result, as the space between the upper fixing table 100 and the lower fixing table 200 is narrowed, the upper assembly 300 moves in the middle direction corresponding to the length of the spacing member 330 . In the present embodiment, the first lower inclined surface 210 is inclined at an angle of 45 degrees with respect to the ground, and has a guide rail structure. The lower end of the spacing member 330 of the upper assembly 300 is installed on the first lower inclined face 210 of the guide rail structure and the lower end of the lower limb member 330 It is preferable to use a structure, a material, or a lubricant to reduce the friction in the course of guiding the movement of the piston.

As described above, the spacing member 330 moves the upper assembly 300 to the center by the downward movement of the upper fixture 100, and the lower assembly 300 is installed on the lower fixture 200, To move the lower assembly 400 installed therein from the outside to the inside. The lower assembly body 410 is disposed in contact with the inside of the space member 330 and the space member 330 is moved in the center direction like the upper assembly 300 while the lower assembly body 410, The lower assembly 400 moves toward the center.

The lower assembly 400 is installed on the upper portion of the lower fixing table 200 and includes a lower assembly body 410 and a lower forging die 420.

The lower assembly body 410 is in contact with the spacing member 330 and one side of the lower assembly body 410 contacts the second lower slope 220 and moves along the second lower slope 220, (420). The second lower inclined surface 220 is formed inward of the first lower inclined surface 210 in such a manner that the second lower inclined surface 220 increases toward the center of the upper fixture 100 and decreases toward the edge, (400) moves upward along the second lower inclined surface (220). As a result, the centering movement by the spacing member 330 and the upward movement guided by the second lower sloping surface 220 are combined so that the lower forging die 420 is diagonally toward the center axis (+) It becomes a moving result. In the present embodiment, the second lower inclined surface 220 is inclined at an angle of 45 degrees with respect to the ground, and meets each other at the center of the lower fixing table 200, and has a guide rail structure. The lower assembly 400 is installed on the second lower inclined surface 220 of the guide rail structure and guides the movement of the lower assembly 400 to the surface contacting the lower lower inclined surface 220 and the lower assembly 400 It is recommended that structures, materials or lubricants are used to reduce friction.

As described above, the forging press of the present embodiment has four forging dies 320 and 420 arranged in an X-shape with respect to the central axis (+) by only moving the upper fixing table 100 downward It can be confirmed that it moves toward the central axis at the same time.

As a result, it is possible to obtain an excellent effect in which the manufacturing cost is very low due to the operation by only one driver, and the operation time between the drivers need not be adjusted. Particularly, because of the result obtained by the shape of the upper assembly body and the lower assembly body, the upper inclined surface for moving the upper assembly toward the center, the first lower inclined surface for lowering the upper assembly, and the second lower inclined surface for moving the lower assembly upward, It is not difficult and the production cost can be lowered.

Furthermore, since the center axis is always fixed irrespective of the moving distance of the forging dies, it is very convenient for positioning and fixing the forging object.

FIG. 4 is a view for explaining a structure of a forging press according to another embodiment of the present invention, and FIG. 5 is an enlarged view of an upper assembly in the forging press of FIG.

The forging press according to the second embodiment of the present invention is characterized in that a device having a forging press of the first embodiment is added. The same components as those of the forging press of the first embodiment are not described, Will be described.

The forging press of the present embodiment further includes a vibrating device for vibrating the forging die so that the forging die can hit the surface of the forging object, with the forging die approaching the forging object.

Specifically, the eccentric cams 500 are installed on the upper assembly body 310 and the lower assembly body 410, respectively, as shown in FIG. The eccentric cam 500 having the eccentric shaft of 1 mm is provided and the motor connected to the eccentric cam 500 is operated so that the forging dies 320 and 420 move in the + And hits the surface of the forging object while performing a reciprocating motion. Such movement by the vibrating device can not create a very strong impact, but is particularly suited to applications that finish the forging process by performing a large number of strikes quickly, thereby improving the forging performance.

While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Those skilled in the art will understand. Therefore, the scope of protection of the present invention should be construed not only in the specific embodiments but also in the scope of claims, and all technical ideas within the scope of the same shall be construed as being included in the scope of the present invention.

100: upper fixture
110: upper inclined surface
200:
210: a first lower inclined surface
220: second lower slope
300: upper assembly
310: upper assembly body
320: Upper forging die
330:
400: lower assembly
410: Lower assembly body
420: lower forged die
500: Eccentric cam

Claims

An upper fixture having two upper slopes which are moved up and down by a driver and which become higher toward the center and lower toward the edge;
A first lower slope facing the upper slope, a lower slope facing the upper slope and a lower slope rising toward the edge, and a second lower slope slope increasing in height toward the center and lowered toward the edge, A lower fixing table having a first lower inclined surface and a second lower inclined surface formed on an upper surface thereof such that two second lower inclined surfaces are located on the inner side so that the shape thereof is symmetrical and a first lower inclined surface is positioned on the outer side of the second lower inclined surface;
An upper forging die for forging the forging object is attached, a side surface of the lower side of the upper side is provided so as to be in contact with the upper inclined surface, and a lower surface of the lower side of the gap member is in contact with the first lower inclined surface, Two upper assemblies guided by the upper inclined surface and the first lower inclined surface and moving inward as the gap between the upper inclined surface and the first lower inclined surface becomes narrower while moving together downward; And
A lower forging die for forging the forging object is coupled and one side of the lower assembly is in contact with the inside of the spacing member so that the upper assembly moves inward toward the center while the other side is in contact with the second lower inclined surface, And two lower assemblies which move upward along the second lower inclined surface while moving toward the second lower inclined surface.

The method according to claim 1,
The two upper forging dies and the two lower forging dies are arranged equidistantly with respect to the central axis on which the forging object is fixed,
Wherein the four forging dies simultaneously move in an X-shaped trajectory toward the forging object by the movement of the upper assembly and the lower assembly when the upper fixture is moved downward.

The method according to claim 1,
Wherein the upper inclined surface is a guide rail structure and the upper assembly is installed on an upper inclined surface of a guide rail structure.

The method according to claim 1,
Wherein the first lower inclined surface is a guide rail structure and the lower end of the spacing member is provided on a first lower inclined surface of the guide rail structure.

The method according to claim 1,
Wherein the second lower inclined surface is a guide rail structure and the lower assembly is provided on a second lower inclined surface of the guide rail structure.

The method according to claim 1,
Wherein a structure or material is used to reduce the friction on the surface where the upper inclined surface and the upper assembly are in contact with each other.

The method according to claim 1,
Wherein a structure or material for reducing friction is used on a surface where the first lower inclined surface and the spacing member are in contact with each other.

The method according to claim 1,
Wherein a structure or material for reducing friction is used on a surface where the second lower inclined surface and the lower assembly are in contact with each other.

The method according to claim 1,
Wherein the upper inclined surface is formed at an angle of 45 degrees with respect to the ground surface.

The method according to claim 1,
Wherein the first lower inclined surface is formed at an angle of 45 DEG with respect to the ground surface.

The method according to claim 1,
And the second lower inclined surface is formed at an angle of 45 degrees with respect to the ground surface.

The method according to claim 1,
And a vibrating device for vibrating the forging die to apply a blow to the surface of the forging object.

The method of claim 12,
Wherein the vibrating device comprises an eccentric cam provided in an assembly to which the forging die is coupled and a motor connected to the eccentric cam.

14. The method of claim 13,
Wherein the vibrating device is installed in two upper assemblies and two lower assemblies, respectively.